Error code 20 on a Kubota L4240 tractor typically indicates an issue with the engine's fuel system, specifically related to fuel pressure or flow. This can be caused by a clogged fuel filter, a failing fuel pump, or issues with fuel lines. It's advisable to check these components and ensure that they are functioning properly to resolve the error. If the problem persists, consulting the owner's manual or a qualified technician is recommended.
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